494392500181 has 16 divisors (see below), whose sum is σ = 500302490688. Its totient is φ = 488517868800.

The previous prime is 494392500103. The next prime is 494392500187. The reversal of 494392500181 is 181005293494.

It is a cyclic number.

It is not a de Polignac number, because 494392500181 - 2¹⁹ = 494391975893 is a prime.

It is a super-2 number, since 2×494392500181² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494392500187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49777786 + ... + 49787716.

It is an arithmetic number, because the mean of its divisors is an integer number (31268905668).

Almost surely, 2^494392500181 is an apocalyptic number.

It is an amenable number.

494392500181 is a deficient number, since it is larger than the sum of its proper divisors (5909990507).

494392500181 is a wasteful number, since it uses less digits than its factorization.

494392500181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11652.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 494392500181 in words is "four hundred ninety-four billion, three hundred ninety-two million, five hundred thousand, one hundred eighty-one".